- David Bier: Many Soviet defectors, including KGB agents and scientists, joined US side and directly provided material aid
- Syrian refugees are doing same, and are the best source of information on life inside ISIS-controlled territory, he says
David Bier is an immigration policy analyst at the Cato Institute's Center for Global Liberty and Prosperity. The views expressed are his own.
(CNN)Last week, Donald Trump made headlines when he detailed his latest immigration proposal: an "ideological test" for immigrants. But while he was right to look to the Cold War for insights on today's ideological struggle, his focus on the exclusion of communists misses the point. Instead, he would have done better to focus on a more effective pillar of the Cold War: accepting vast numbers of refugees from areas controlled by our enemies.